Document Detail

Validity of the IDEEA accelerometry system for quantitative gait analysis in patients with hip osteoarthritis.
MedLine Citation:
PMID:  22771482     Owner:  NLM     Status:  Publisher    
OBJECTIVE: To evaluate the concurrent validity of an accelerometry-based system (IDEEA(a)) with a criterion instrument (Gaitrite(b)) for the evaluation of spatiotemporal gait variables in orthopaedic patients. DESIGN: Validity study. SETTING: Research laboratory in an orthopaedic hospital. PARTICIPANTS: Twenty-six men with unilateral hip osteoarthritis (mean age ± SD, 54 ± 9 years). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Patients were asked to walk at normal and fast velocities while gait cycle, swing, double support, step length, cadence and speed were concomitantly recorded with the two instruments. Concurrent criterion-related validity was examined using intraclass correlation coefficients and Bland-Altman limits of agreement. RESULTS: Intraclass correlation coefficients were acceptable for all gait parameters (range: 0.815-0.997), except step length (0.783). Limits of agreement were low for gait cycle, swing and cadence, though relatively high for double support, step length and speed. A significant bias between the two measuring instruments was consistently observed. CONCLUSIONS: In patients with hip osteoarthritis, quantitative gait analysis with the IDEEA accelerometry system was satisfactory for the main temporal gait parameters, while double support, step length and walking speed quantifications were invalid. IDEEA should be used with caution, and modifications of the system are recommended for improved use in clinical practice and research.
Julia F Item-Glatthorn; Nicola C Casartelli; Jeannette Petrich-Munzinger; Urs K Munzinger; Nicola A Maffiuletti
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-4
Journal Detail:
Title:  Archives of physical medicine and rehabilitation     Volume:  -     ISSN:  1532-821X     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985158R     Medline TA:  Arch Phys Med Rehabil     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 the American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.
Schulthess Clinic, Neuromuscular Research Laboratory, Zurich, Switzerland.
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